Charge two devices at the same time with the Cellet 2.1 Amp Micro USB Car Charger. Equipped with a micro USB coiled cable and additional USB port, it allows you to charge up to two devices (either two smartphones or 1 tablet and smartphone) simultaneously at rapid speeds. The blue LED light indicator shows that your device is plugged in and charging; built-in smart IC chip technology prevents your device from overcurrent, overcharging and overheating.